Power system



Feb. 7, .1928. 1,658,089

- H. c. MALLORY POWER SYSTEM Original Filed April 23. 1921 2 Sheets-Sheet. 1

" 'A llllll A Feb. '7, 192s. l 1,658,089

H. C. MALLQRY POWER SYSTEM Original Filed April 23. 1921 2 Sheets-Sheet 2 Patented et. 7, 19j

narran s'rATEs HARRY C. MALLORY, OF NEI/V YORK, N. Y.; SUE R. MALLORY ADMINISTRATRIX OF SAID PATENT OFFICE.

HARRY C. IVIALLORY, 'DECEASEl Pow-ER SYSTEM.

Application Icd April 23, 1921, Serial No. 463,998.

withdrawing air from the circulating systemto vreglllate and maintain thev vacuum andra pump is-usually lrequired. to return liquid of condensation from thecondenser to the enginecooling spaceor spaces. n

In accordance with the present invention I'employ a single pump` for exhausting air from the engine cooling lsystem and for returning water ofcondensation from 'the condenser to the engine cooling space. pump thus used may be 'of the gear, rotary piston or other known type, suitable for the character of use required and is advantageously provided with separate pumping chambers for exhausting air and for the return of liquid of'condensation. In many cases the pump may advantageously he provided with additional [pumping chambers for performing the different pumping operations required' in the power system. For.y example, one 'pumping chambermaybe provided to compress air for tire filling and analogous purposes, and another chamber` may be provided to draw the necessary vacuum in the vacuum feed tank when the engine fuel feeding mechanism.comprises such tank. ,In certain cases, however, the4 same pumping chamber'v may advantageously beemployed to draw theproper vacuum in the engin-e cooling system and in the vacuum feed tank.

The various yfeatures of novelty which characterize myinvention are pointed out with particularity inthe claims annexed to and forming a part of this specification.

For al better'understanding of the inven tion, however, and'its advantages, reference should he had to the accompanying draw ings and descriptive matter in which .have

The y Renewed July 6, 1927.

illustrated anddescribed preferred embodiments of .my invention.

Gf lthe drawings:

Fig. 1 is anelevation with. parts broken away and inA section of an automobile enginehavinga single pump for exertingseparate pumping eects on the air and Water lines forming a part of the engine cooling system; Fig. 2 sanelevationof apparatus differing fromFig. 1 in that the pumping mechanism ,comprises two additional air pumping chambers; c

FigB is agsectional elevation of .thepump shownin Fig.A 2.;v y f Fig. 4 is aA section 'on the line 4-4.ofFig. 3; and

Fig. 5 isla view ofa portionof theapparatus shown in Fig. 1 with a siightmodiiication in the piping connections.

In the drawings, and referring first to the construction .shown in Fig. 1, A representsan internal combustion engine such yas is employed on an automobile havingv a cooling system comprisinga jacketB surroundingthe engine cylinders A andpartially filled with `water or other suitable cooling liquid, C representing the free top surface of the liquid in the jacketB.' From the vapor space provided in. the upper portion of the jacket B, vaporvgenerated in the jacket passes through a. conduit D to .an air cooledv condenser E. Thelatteris provided with areturn line F; through which `liquid of condensation Vformed in the condenser E is returned to the interiorlof the jacket B. Air is exhausted from .the'c'ooling system as required through the pipe M connected to the lower header of the condenser through a suitable air valve M.. Q represents a safety valve limiting the maximum pressure inthe circulating system y.and P a vacuum relief `valve for admitting air to ,the system as required ,to prevent thevacuum'in the system from. exceeding a predetermined amount. Y

In'faccordance with the 4present .invention the return. line F and theairi-line M lead tothe respective inlets of separate water and air pumping chambers in a, single rotary pump G having the outletfrom its water pumping chamber .connected by" the pipe H speed reducino (rearing l- 25 :"2 Y The construction shown in Fig. 2 diiiers i'rom that shown in l in that the pump GA replacing the pump ofi Fig l is provided with tivo additional pumping cham-v y bers, one oi' which has its inlet connected by pumping chamber.

the pipe l to the vacuum feed tank .lt and its outlet connection lil d iseharging into the atmosphere, While the other has an inlet S vfor atmospheric air, and an outlet connec tiond2 for delivering compressed air to the tires for :lillingy the latter when this is necessary. '.lhe vacuum tang R supplies 'fuel through the pipe connection B2 to the engine carburetor A2 and draws this i'uel 'from a main supply tank (not shown) through a pipe R30. The manner in which the flow of oilI through the tank R is produced by pressure variations therein need not be illus-l trated or described since the details of this mechanism form no part of the present invention,l and Athe mechanism, moreover, is `vv'ell known to those skilled in the art. l

The pump GA as shown in Figs. k2, 3 and 4f comprises a housing containing tour separate pumping chambers G5 separated by partitions G6, and each containing a pair of gear pumping members G and G2. The gears G are mounted on the main shaft I and the gears G2 aremounted on a countershatt G journalled on the pump housing. G7 represents packing around the shafts l and G10 held in grooves in the partitions G6 and preventing leakage along the shafts" from one pumpingv chamber into an adjacent rlhe pump G ot Fig. l diiers 'trom the pump GA only that it coin prises but two ypumping chambers and sets oit gears.

Since the vacuum which must be drawn in V the engine cooling system and in the tank R are ofthesame order, the air exhaust line M from thecondenser and the air exhaust line R from. the vacuum tank R maybe advantageously connected to the inlet` ot the same pumping chamber as indicated in Fim 5 wherein R3 represents a valve by which' the pipe R. may be closedit and when this becomes necessary.`

The engine cooling systemdisclosed herein is of the general type disclosed and claimed in my prior application, Serial No. 163,332, iiled April 20,191?, but in the cooling system shown in detail in my prior application, air is exhausted from the system by a connection from the latter to the suction manitold intake of the engine. The provision oi separate pumping mechanism for exhausting air from' the cooling system tends to same simple compact mechanical unit, IL

achieve this result Without adding apprecis ably to the bulk or cost of the system as a s whole, and by simplifying rather than complicating the latter. has

i-ler'eto'tore it been the common practice to 'draw the necessary vacuum in the vacp num feed tank b y connecting it to the suction intake manifold. The saine advantages are obtained here as in the air exhaust line from the cooling system by providing a separate positive pumping 'effect for drawing air from the vacuum tank. expense or complication involved in doing this by means ot' a separate pumping chamber as in the arrangement shown in Fig. 2 is insigniiicant yand of course no additional complication or expense is involvedl When a single pumping chamber is provided for drawing. the air from the engine cooling system and from the feed; tank as shown in Fig. 5. The provision of an additional pumping chamber for air compressing or analogous purposes in the pump mechanisml otherwise required in the power system adds nothing appreciably to the cost, bulk or com-' pleirity of the system as a Whole.

TWhile in accordance With the provisions of the statutes I have illustrated and described the best form and ymode of carryingout my invention now knovvn to me, it will be apparent to those'skilled in the art that formal changes may be made WithoutY departingV The additional trom the spirit of my invention as set forth in the appended claims and that certain fea,- tures of my invention may sometimes be used to advantage Without the corresponding use of other features.

Having new described my invention, what' Y Y l claim as new and desire yto secure by Letters Patent, is: o

l. `The combination with an internal comu bustion engine having a cooling system com- Y' prising a liquid containing 'engine cooling-y space and' a condenser connected to said space to condense vaporgenerated by the heat absorbed in the liquid in' said space, or a rotary pump comprising a casingi'ormed Wit-htwo side by side pumping chambers, one for re- Y to condense vapor generated lby the heat ab- Y sorbed by the liquid in said space, oa rotary pump having a casing formed vvith one pumping chamber Jfor returning liquid of condensation :trom said condenser to'said lZO space and an adjacent pumping chamber for exhausting air from said cooling system.

3. In a power system comprising an internal combustion engine having a cooling system including a liquid containing engine cooling space and a condenser receiving and condensing vapor generated by the heat ab? solbed by the liquid vapor generated in said space, and having engine fuel feeding mechanism including a vacuum tank, of a rotary pump comprising a casing formed with two side by side pumping chambers, one for re* turning liquid of Condensation from said condenser to said space and the other for eX- hausting air from the engine cooling system and from said tank.

4. In a power system comprising an internal combustion engine having a cooling system including a liquid containing engine cooling space and a condenser receiving and condensing vapor generated by the heat absoibed by the liquid in said space and having engine fuel feeding mechanism including a vacuum tank, the improvement Vwhich consists in a single air exhausting device for removing air from the engine cooling system and from said tank. v

Signed at New York in the Ycounty of New York and State of New York this 20th day of April, A. D. 1921.

HARRY o. MALLORY. 

